Machined? Sure.
Replaced... I dunno.
I was told there was a machine shop in Vic that was manufacturing new cranks for a while, but they gave it away because they couldn't get a reliable supply of rods and they weren't happy with the end result. Our local diesel specialist rebuilt a couple of V9X's using said cranks, but offered very short warranty.... regardless.. they couldn't / wouldn't help us.
Have you had any luck with rods??